It would be nice if they added chat functionality to the Foundry, as long as there's some way to minimize it so it wouldn't be distracting if you're really focused on something and didn't want to be bothered.

While we're at it, it would also be nice to be able to invite other Foundry authors to your map to preview it. That seems like it would be a logical extension of having an in-game Foundry chat room.